Yes, key info has been deleted and buried in search engines since the beginning. The biggest fault in Hive sites atm is search indexing and information management. There was a point around 2007-2008 where the scumbags decided to shut down social media and when they pushed people towards Facebook - where posts last only seconds and there is no real way to access historic information reliably. Ever since then people have not seemed to find it odd that years of writing and content is difficult or impossible to find on social sites.
Steem's search originally just used Google and now most of my posts don't show up in Google either on Steemit or Peakd etc.
If I search using DuckDuckGo then I still don't see all of my posts on Steem and Hive either.
In fact, I do not have a search tool, even today, that returns the full catalogue of my posts on Hive. The internal searches don't either. Last time I checked (probably over a year ago) the search results from Hivemind did not include all of my Hive posts!
So essentially, the addition of a complete and uncensored search for hive is essential. There are lots of features that can be 'borrowed' from Google search and plenty more than are missing from Google that can be added too.